Le dimanche 10 septembre 2006 Ã 17:16 +0100, Jamie McCracken a Ãcrit :
Laurent Aguerreche wrote:Hello, currently trackerd generates thumbnails for PDF files. I just wonder whether it is useful! To have this feature, trackerd calls evince (which depends on many components of X and GNOME...) and those calls slowdown a little bit trackerd. Graphical shells, like Nautilus, Konqueror or Thunar, are supposed to know how to make thumbnails from files, and I have already many generated thumbnails in ~/.thumbnails. So I think that trackerd should not do thumbnails and let other programs do it by themselves. Am I missing something?Yes. Doing it in tracker means you wont have to wait for file managers to thumbnail.
Yes but I don't care about that! IMHO trackerd should be dedicated to extract datas from documents for research, and only for research. In future if trackerd does a thumbnail for each indexed file it will spend something like an equal, or greater, time for this task than for extracting datas. Furthermore I know that I have some documents that I won't never open because they are in archives, in big projects, etc. So while trackerd is losing its time with thumbnailing for documents that I won't never open, live queries aren't as responsives as they could be for instance.
However: 1) thumbnails should be optional so feel free to add an option to disable them.
Ok. So I propose a patch. (default is DoThumbnails=true...)
2) They dont use the freedesktop spec for thumbnails yet. This is a bug and a fix would be nice http://lists.freedesktop.org/archives/xdg/2004-October/005067.html
But a fix doesn't seem to be so easy!
Names in ~/.thumbnails/{normal,large,fail} are md5 hashes. I think it
isn't a problem since there is a free (in public domain) implementation
available in libgnomeui (it just takes time to compute uri). But
problems come right after: thumbnails need to be resized and tagged. In
libgnomeui, GDK is used. Since GDK is dependent to X, a replacement
should be found...
3) long term plan is to add *optional* gconf facility for replacing the config file and getting access to all the the thumbnailers defined in gconf (see keys /desktop/gnome/thumbnailers in gconf-editor)
Hum... and a corresponding thing for KDE's users? ;-) It could be interesting to have a way to change options dynamically. With DBus? Laurent.
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